活動(dòng)日期：2018-11-14

活動(dòng)時(shí)間：15:00

報(bào)告人：張福泰 教授

主持人：李志慧 教授

地點(diǎn)：長(zhǎng)安校區(qū) 數(shù)學(xué)與信息科學(xué)學(xué)院學(xué)術(shù)交流廳

主辦單位：數(shù)學(xué)與信息科學(xué)學(xué)院

講座內(nèi)容簡(jiǎn)介：

Distributed key generation is a method for a set of players to generate a pair of public key and private key together, such that the public key is output publicly while the private key is distributed among the players by a secret sharing method. Secure distributed key generation in finite field for discrete-log based cryptosystems has been studied for many year and many protocols have been proposed and widely used in threshold cryptosystems and distributed cryptographic computing. In this talk we focus on secure distributed key generation in bilinear groups and propose such a protocol on vector space access structures based on verifiable secret sharing. The newly proposed distributed key generation protocol is secure and has a wide application.

講座人簡(jiǎn)介：

張福泰，南京師范大學(xué)教授，博導(dǎo)?，F(xiàn)為中國(guó)密碼學(xué)會(huì)理事，密碼學(xué)報(bào)編委，中國(guó)密碼學(xué)會(huì)密碼算法專(zhuān)業(yè)委員會(huì)委員。長(zhǎng)期從事密碼學(xué)及相關(guān)方向的教學(xué)和科研工作。主要研究興趣包括公鑰密碼體制、聚合簽名、線(xiàn)性同態(tài)簽名、云存儲(chǔ)中的數(shù)據(jù)安全等。